Neuro wrote:I was thinkong searching it in the load rom module.If i found somenthing i will post it here.

The ROM loader on the ARM side is a generic one, used from ZX81 to Genesis. Also there isn't a large buffer space on the MCU for storing the whole ROM and search in it. I don't say the searching cannot be implemented in the FPGA (the A2600 core is a small one, there are plenty of space), but I don't have any motivation to do it. A good exercise for who want to learn some HDL coding.

Here's a test version which fixes Tac Scan, but need some help to test if the fix doesn't break something else.Sub Scan works on TV for me, maybe just the sync signals are confusing the scandoubler on VGA.

Tac Scan abuses the hardware a bit, as the Stella Programming Guide says:

motion registers should not be modified during the 24 computer cycles immediately following an HMOVE command. Unpredictable motion values may result.

Guess when it writes to HMBL reg?

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slingshot wrote:Here's a test version which fixes Tac Scan, but need some help to test if the fix doesn't break something else.Sub Scan works on TV for me, maybe just the sync signals are confusing the scandoubler on VGA.

Tac Scan abuses the hardware a bit, as the Stella Programming Guide says:

motion registers should not be modified during the 24 computer cycles immediately following an HMOVE command. Unpredictable motion values may result.

Guess when it writes to HMBL reg?

I've tested all the games I have in my card (302 normal games and 16 superchip), and I've only found a problem on Pole Position, speed indicator is now corrupted. But for example, on Donkey Kong Remake (Super Chip) http://atariage.com/forums/topic/206497-dk-vcs/ now although still not well, texts between stages are better displayed, before they were corrupted.

vebxenon wrote:I've tested all the games I have in my card (302 normal games and 16 superchip), and I've only found a problem on Pole Position, speed indicator is now corrupted. But for example, on Donkey Kong Remake (Super Chip) http://atariage.com/forums/topic/206497-dk-vcs/ now although still not well, texts between stages are better displayed, before they were corrupted.

Great, thanks.Donkey Kong's shfited texts are only off by 1-pixel (Atari pixels are pretty large). Will be a good hunt for it.Upd.: another test version attachedDonkey Kong Remake, Tac Scan, Pole Position, Juno First are ok for me.

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